ALL A AAAA CAA CNAME MX NS PTR SOA SRV TXT ANY

No ANY records found for 251.192.159.

Try 192.159 instead?

id 39869, opcode QUERY, rcode NOTIMP, flags QR RD RA
;QUESTION
251.192.159. IN ANY
;ANSWER
;AUTHORITY
;ADDITIONAL

ANY Record Lookup

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